| 000 | 00560nam a22001697a 4500 | ||
|---|---|---|---|
| 008 | 230310b |||||||| |||| 00| 0 eng d | ||
| 020 | _a92-805-0510-6 | ||
| 040 |
_aNational Science Library _cNational Science Library |
||
| 080 | _aD 025.4PATENt N4.9 | ||
| 245 |
_aInternational patent classification _c/ WIPO |
||
| 260 |
_aGeneva: _bWIPO, _c1994 |
||
| 490 | _a7th ed. | ||
| 500 | _3Vol. 9 (Guide, survey of classes and summary of main groups); ISBN: 92-805-0510-6; 313p. | ||
| 650 | _aLibrary science | ||
| 653 | _aPatent classification | ||
| 942 |
_2udc _cBK |
||
| 999 |
_c7445 _d7445 |
||